I've been gradually sliding a supervisory role in my job (mainly by dint of everyone else with similar levels of seniority not being interested) and it's been a bit of a challenge because I'm an academic and a research nerd and not a manager. My supervisees are all good folks but they haven't been getting important parts of their jobs done and it's negatively impacting the org. I need to learn how to get them finish their crap but the descriptions of most management books stick to my skin in a way that feels hard to wash off. Does anyone know of good books/etc that won't make me talk like an MBA program replaced my soul with foam packing peanuts?

Edit: Thanks for all the really thoughtful responses, it's a huge help.